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Business Case 031 – Tunnels Refurbishment

Business Case 031 – Tunnels Refurbishment. Taxi Liaison Meeting. 10-Apr--14 Victoria Sutton (Landside Operations) Michael Cooper (Development Project Manager) 19341-XX-ME-400-000137. Project Overview. Refurbishment of Main & Cargo Tunnels Replacement or Introduction of 24 various systems

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Business Case 031 – Tunnels Refurbishment

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  1. Business Case 031 – Tunnels Refurbishment Taxi Liaison Meeting 10-Apr--14 Victoria Sutton (Landside Operations) Michael Cooper (Development Project Manager) 19341-XX-ME-400-000137

  2. Project Overview • Refurbishment of Main & Cargo Tunnels • Replacement or Introduction of 24 various systems • Structural Works, Life Safety Equipment, Architectural • Objectives • Reduce risk to life to As Low As Reasonably Practicable (ALARP) • Suitably reduce business continuity risk • Replace life expired assets • Minimise operational cost impacts • Improve passenger experience

  3. Architectural Treatment • “Living Garden” planting masques entrance to tunnel (similar to T5 Welcome Arch) • Improved lighting under business car-parking bridge to extend entrance to the tunnel • Improved internal treatment through simple lighting

  4. Traffic Management • Planned Closures • Various configurations of lane closures from 22:00-05:30 • Always one lane in and one lane out available • No day-time main bore closures • Side bores closed throughout duration of works • Extensive Modelling undertaken and numerous alternatives considered • Traffic Trials undertaken April 2013 • Cyclists • Will remain to use the side-bores during survey works • Will not be permitted to use the tunnels during these works

  5. Programme • Apr-14 Surveys Commence • 22:00-05:30 night time closures only • Side-bores remain open during the day • One side-bore to main open at night for cyclists (alternates) • Cladding to be removed • May-14 Surveys Conclude • May-14Main Works Start • 22:00-05:30 night time closures only • Both side bores closed 24/7 • Any extension of times will be proceeded by trial closures first • Dec-15Main Works Complete

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